(14, -8 ) and (7, -6)

Pick the expression that matches this description: a polynomial of the 5th degree with a leading coefficient of 7 and a constant term of 6 (choice a) 7x^5+2x^2+6 (choice b) 7x^6−6x^4+5 (choice c) 6x^7−x^5+5 (choice d) 6x^5+x^4+7

What is the value of x in the diagram below?

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)